Sphericus is the name of the three-dimensional Earth-like planet that the Shee relocated to after their exodus from Albia. The Shee Ark is orbiting around Sphericus, and in the final chapter of the Lone Shee chronicle, was attacked by the Banshee.
Fishing Cactus confirmed that Creatures Online was to take place on Sphericus.
Sphericus of Creatures Online
There were to be multiple environments in the Sphericus of Creatures Online, and Fishing Cactus at one point considered developing more environments for sale.